I've just encountered an issue with a Transcend 64GB SDXC card, in the MixPre-6. Obviously, as Murphy's Law would have it, it was the first card I attempted to use with it. While sending off a short video to Sound Devices tech support, I tested another card (a 32GB SanDisk Extreme Pro) that seems to work just fine. While Sound Devices has not yet put up a fully approved media list for the new MixPre recorders, it would be wise to heed Paul Isaacs' previous suggestion in this thread:

Can anyone help me out here on the 3? I am confused on how many channels it can record. The manual says, "The MixPre-3 can record up to five audio tracks at 96kHz, 24-bit to SD cards(SD, SDHC, or SDXC) using the industry standard .WAV file format."

I would like to use 2 of the XLR inputs for mics and the stereo mini in for a stereo soundboard. Can it record 4 separate tracks?

Jesse

i believe it does...2 via xlr1 via the 1/82 mixdown of the threeSo you could get an aud/sbd recording like you asked about but it would be mono sbd

Can anyone help me out here on the 3? I am confused on how many channels it can record. The manual says, "The MixPre-3 can record up to five audio tracks at 96kHz, 24-bit to SD cards(SD, SDHC, or SDXC) using the industry standard .WAV file format."

I would like to use 2 of the XLR inputs for mics and the stereo mini in for a stereo soundboard. Can it record 4 separate tracks?

Jesse

i believe it does...2 via xlr1 via the 1/82 mixdown of the threeSo you could get an aud/sbd recording like you asked about but it would be mono sbd

One thing that threw me for a loop is that this records in poly wave files. I have only had experience with a wave file for each channel or stereo pair. So, when I saw there was only one file for each dry run test I did, I was like, WTF? Called SD support and they educated me on poly wave files. Popped it up in audicity and all became clear.

Boo. I use Wavelab and I don't think it plays nice with poly files. At least it didn't on version 5 when I accidentally recorded 4 channels as poly when I had the R4.

A quick run through SD's Wave Agent allows you to switch between Poly And Mono WAVs

Also, WL has an "Audio Montage" feature that I use to do my Matrixing!

Got mine in hand. Two of the three USB C cables I ordered don't send enough power from a USB battery to power more then 2 channels of phantom. The stock one from SD only works on 4 channels if both USB A plugs are plugged in. This is the one that can power 4 phantom channels off a USB battery. https://www.ebay.com/itm/162439366511

Thanks Ted, I just bought the LAST one left I think the guy keeps listing them one at a time, so that you're forced to buy "the last one" lol

Also yinz guys, I sent SD an email awhile back asking about MP6 USB powering, and they told me some current draw numbers for the different powering methods! This is a quote directly from Dennis Witt@SD

"Hello Brandon,

Thank you for contacting Sound Devices!

Via the USB-C amperage, we do not have any information as this varies depending on USB source capability. The unit will pull 5v, but depending on the USB amperage, the MixPre Series will determine if it will be in "Low Power" or "Standard Power" mode. The MixPre Series will automatically determine what mode to run in and will be indicated on the home screen. Additionally, any USB port which doesn't put out 1.5A would be considered "low power."

So according to that, running the L-Series Lithium Batteries will provide the longest runtimes, because it draws less power than the other powering options! The 4xAA Pack only runs @660mah, and he wasn't sure of the 8xAA Pack! What's weird is that those draw UNDER 1A@MAX, but the USB-C Port draws DOUBLE that @1.5A Whatever though! As long as you have a sufficient USB-C cable, you should be just fine powering the MP3/6 with a SINGLE USB-A power source from a 2.1A or 2.4A USB-A Output! Like I said above, I'll be buying a few different Anker 5v USB Batteries to run STRICTLY with my MP6!

That said, I have already bought [3] different USB-C cables recently for my MP6, so one of them has got to do the job! Thanks again for the link, Ted Plus, I have an extra Google Pixel USB-A->Micro C Cable that came with my phone, that I KNOW will supply enough power to the MP6, because it can charge my Pixel phone@1A Max

I received my MixPre-3 last night. I ran it through some initial tests and all went well. When I got up this morning I turned on the MixPre-3 and it won't fully start up. It may be something stupid that I'm missing. Specifically knob lights will turn green, basic screen will show (just giving version number), then all blinks off. About 3 seconds later the knobs turn green, a second later the screen shows, then all blinks off again for 3 seconds. Rinse and repeat.

I've tried using both the AA batteries and USB connection. Neither changes this behavior.

Anyone have ideas about what is causing this or how to get out of the loop? Unfortunately Sound Devices is closed for 3 days.

Solved problem somewhat. It turns out the card I used last night, and had reformatted by the MixPre-3, is no longer read by the device. (My computer can read it just fine.) So it looks like the Transcend 64 Gb (45MB/s, 300x) also does not work well with the device.

I received my MixPre-3 last night. I ran it through some initial tests and all went well. When I got up this morning I turned on the MixPre-3 and it won't fully start up. It may be something stupid that I'm missing. Specifically knob lights will turn green, basic screen will show (just giving version number), then all blinks off. About 3 seconds later the knobs turn green, a second later the screen shows, then all blinks off again for 3 seconds. Rinse and repeat.

I've tried using both the AA batteries and USB connection. Neither changes this behavior.

Anyone have ideas about what is causing this or how to get out of the loop? Unfortunately Sound Devices is closed for 3 days.

jbell had a similar issue. Try a different SD card. I suspect the 64 GB card works once and then you have a problem. Not sure why.

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